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mod arch;
mod cli;
mod registers;
mod trace;
mod ui;
use crate::cli::Args;
use crate::trace::{exec, trace};
use crate::ui::UI;
use clap::Parser;
use fork::{fork, Fork};
use nix::unistd::Pid;
use owo_colors::OwoColorize;
use trace::attach;
/// Create a fork of the program and execute the process in the child. Parent gets the pid
/// value and trace it.
fn main() -> anyhow::Result<()> {
let args = Args::parse();
let process: Result<Pid, String> = if args.command.is_some() {
match fork() {
Ok(Fork::Child) => return exec(&args.command.unwrap()),
Ok(Fork::Parent(child)) => Ok(Pid::from_raw(child)),
Err(err) => Err(format!("fork() failed: {err}")),
}
} else if args.attach.is_some() {
let pid = Pid::from_raw(args.attach.unwrap());
if attach(pid).is_ok() {
Ok(pid)
} else {
Err(format!("Unable to attach to process `{pid}`"))
}
} else {
Err(format!("You must define a command or a PID to attach"))
};
match process {
Ok(pid) => {
if !args.no_tui {
let mut ui = UI::new();
ui.start(pid, &args)?;
} else {
trace(pid, &args)?;
}
}
Err(e) => {
eprintln!("{}", e.red());
}
};
Ok(())
}
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